Wasn't Pontius Pilate the Roman governor (ie dictator) of Judea? So far as I can tell "Emperor" is basically a euphemism for "King", which various societies have had severe phobia about.

etymonline

Emperor - Etymology, Origin & Meaning

"sovereign ruler of an empire," early 13c., emperour, from Old French empereor "emperor,… See origin and meaning of emperor.

The Roman emperors took the title of "Imperator" meaning something like "conquering general" because the Romans might have revolted if the rulers took the title of "Rex" (King). The concept of "Empire" is a later invention that the people of that time would not have used.

etymonline

Empire - Etymology, Origin & Meaning

"territory subject to an emperor's rule;" in general "realm, dominion;" late 14c. as… See origin and meaning of empire.

The etymology is literally 'an area which is ruled', which Pilate's central role seems to establish. So, I think you are playing a word game rather than thinking clearly. Moreover, if you understand how the Roman governorship worked you see clearly that the Romans could never have crucified Christ. Once Pilate declares him innocent it would be murder to crucify him anyway.